Air purifier



FIG. 1 is an isometric view, from the top left, of a first embodiment of the air purifier.

FIG. 2 is an isometric view, from the bottom right, of the first embodiment of the air purifier.

FIG. 3 is an elevation view from the left side of the first embodiment of the air purifier.

FIG. 4 is an elevation view from the front side of the first embodiment of the air purifier.

FIG. 5 is an elevation view from the right of the first embodiment of the air purifier.

FIG. 6 is an elevation view from the back of the first embodiment of the air purifier.

FIG. 7 is a plan view from the top of the first embodiment of the air purifier; and,

FIG. 8 is a plan view from the bottom of the first embodiment of the air purifier. 

CLAIM We claim the ornamental design for an air purifier, as shown and described. 